Electric cycle

ABSTRACT

A kit for an electric cycle includes a powertrain module including a case, a battery disposed in the case, an electric motor in communication with the battery and disposed in the case, and a connecting port on the case. The kit includes a first module including a frame member configured to releasably engage the connecting port and a wheel rotatably connected to the frame member, a second module including a frame member configured to releasably engage the connecting port, and a releasable locking feature on the connecting port.

BACKGROUND

Electric cycles provide supplemental transportation options for vehicleconsumers to suit needs that automobiles may not optimally provide. Forexample, a two-wheel electric cycle (i.e., an electric bicycle) may beused on smaller roads that larger passenger vehicles cannot easily use.The electric cycles are often transported with the vehicles for use atdifferent destinations.

Different kinds of electric cycles may suit different consumer needs.For example, an electric wheelchair is suited for consumers who requiremobile assistance, and an infant carrier is suited for consumers withsmall children. Because consumers may have different and changingrequirements, access to a plurality of electric cycles is desired.Because each electric cycle consumes space, owning several electriccycles is often unwieldy. Furthermore, vehicles often have limited spaceto store the electric cycles.

There remains an opportunity to design electric cycles that canaccommodate multiple consumer needs and satisfy packaging constraints invehicles.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view of an electric cycle.

FIG. 2 is an exploded side view of the electric cycle.

FIG. 3 is a block diagram of a powertrain module.

FIG. 4 is a perspective view of a wheel in a folded state.

FIG. 5A is a perspective view of a transmission on the electric cycle.

FIG. 5B is a view of the transmission.

FIG. 6 is a view of a first exemplary kit for the electric cycle.

FIG. 7 is a view of a second exemplary kit for the electric cycle.

FIG. 8 is a view of a third exemplary kit for the electric cycle.

FIG. 9 is a view of a fourth exemplary kit for the electric cycle.

DETAILED DESCRIPTION

With reference to the Figures, wherein like numerals indicate like partsthroughout the several views, a kit 10 for an electric cycle 12 includesa powertrain module 14, a first module 30 a, and a second module 30 b.The powertrain module 14 includes a case 16, a battery 18 disposed inthe case 16, an electric motor 20 in communication with the battery 18and disposed in the case 16, and a connecting port 22 a, 22 b, 22 c, 22d, 22 e, 22 f on the case 16. A releasable locking feature 24 is on theconnecting port 22 a, 22 b, 22 c, 22 d, 22 e, 22 f. The first module 30a includes a frame member 26 and a wheel 28 rotatably connected to theframe member 26. The frame member 26 is configured to releasably engagethe connecting port 22 a, 22 b, 22 c, 22 d, 22 e, 22 f. The secondmodule includes a frame member 26 configured to releasably engage theconnecting port 22 a, 22 b, 22 c, 22 d, 22 e, 22 f.

The electric cycle 12 may be formed with either of the first or secondmodules 30 a, 30 b attached to the powertrain module 14, allowing forcustomization of the electric cycle 12. Thus, the kit 10 allows for acyclist (not shown) to construct any one of a plurality of cycles 12depending on the needs of the cyclist. Because the first and secondmodules 30 a, 30 b include frame members 26 configured to releasablyengage the connecting port 22 a, 22 b, 22 c, 22 d, 22 e, 22 f, the firstand second modules 30 a, 30 b may be attached, released, and swapped.The releasable locking feature 24 secures the first and second modules30 a, 30 b to the powertrain module 14 during use of the electric cycle12, but allows the cyclist to swap the first and second modules 30 a, 30b for construction of a different configuration of the cycle 12.

As set forth further below, the kit 10 may include a plurality of themodules 30 a, 30 b, 30 c, 30 d. Specifically, as shown in FIGS. 6-9merely for exemplary purposes, the kit 10 may include the first module30 a, the second module 30 b, a third module 30 c, and/or a fourthmodule 30 d. The kit 10 may include any combination of two or moremodules, such as modules 30 a, 30 b, 30 c, 30 d, or other suitablemodule not shown in the examples of FIGS. 6-9. In other words, modules30 a, 30 b, 30 c, and 30 d are merely shown in the figures andreferenced throughout this text for exemplary purposes. The modules maybe selectively chosen to form any of a plurality configurations of theelectric cycle 12.

The powertrain module 14 includes the case 16. As shown in FIG. 2, thecase 16 may have a first side 32 and a second side 34 opposite the firstside 32. The powertrain module 14 may include several connecting ports22 a, 22 b, 22 c, 22 d, 22 e, 22 f, one of the connecting ports 22 abeing on the first side 32 and another connecting port 22 d on thesecond side 34. The connecting ports 22 a, 22 b, 22 c, 22 d, 22 e, 22 fallow attachment of modules 30 a, 30 b, 30 c, 30 d to the first andsecond sides 32, 34. The first and second sides 32, 34 are positionedsuch that when the modules 30 a, 30 b, 30 c, 30 d are attached to thefirst and second sides 32, 34, the electric cycle 12 is properly alignedfor use.

A set of pedals 36 may be supported by and extend through the case 16.The set of pedals 36 allows the cyclist to place their feet above theground during use of the electric cycle 12 and may be pedaled by thecyclist to physically propel the electric cycle 12, as set forth furtherbelow. The set of pedals 36 may be constructed of any suitable material,e.g., a rigid polymer. The set of pedals 36 may rotate freely.

The powertrain module 14 may include a seat 38 supported on the case 16,as shown in FIGS. 1 and 2. The seat 38 may be constructed of anysuitable material, e.g., a polymer. The seat 38 may be adjustable toaccommodate the cyclist's height.

The powertrain module 14 may include the battery 18, as shown in FIG. 3.As mentioned before, the battery 18 may be disposed in the case 16. Thebattery 18 may be of any suitable type, e.g., lithium-ion, nickel-metalhydride, solid-state, etc.

The powertrain module 14 may include the electric motor 20, as shown inFIG. 3. The electric motor 20 may be disposed in the case 16. Theelectric motor 20 may be in communication with the battery 18, whichprovides electricity to operate the electric motor 20. The set of pedals36 may be connected to the electric motor 20, and revolving the set ofpedals 36 may rotate the electric motor 20 in such a manner as torecharge the battery 18.

The modules 30 a, 30 b, 30 c, 30 d may include one or several framemembers 26. The frame members 26 may be constructed of any suitablematerial, e.g., aluminum. The frame members 26 may be configured toengage the connecting ports 22 a, 22 b, 22 c, 22 d, 22 e, 22 f. Theframe members 26 may, e.g., connect the powertrain module 14 to thewheel 28, provide handlebars for the cyclist to steer the electric cycle12, or connect to other frame members 26, etc.

As shown in FIGS. 5A-5B, the kit 10 may include a transmission 40 havinga first end 42 connected to the electric motor 20 and a second end 44configured to be connected to one of the wheels 28. The first end 42 maybe connected directly to the electric motor 20 or may be connected tothe electric motor 20 through intermediate gearing (not shown).Similarly, the second end 44 may be connected directly to the wheel 28or may be connected to the wheel 28 through intermediate gearing (notshown).

The transmission 40 may be connected to the set of pedals 36 such thatpedaling the pedals 36 may transfer rotation through the transmission 40to the wheel 28. The transmission 40 may be directly connected to theset of pedals 36 or may be connected to the set of pedals 36 throughintermediate gearing (not shown). A freewheel (not shown) may bedisposed between the set of pedals 36 and the wheel 28 such that theelectric motor 20 may be operated without rotating the set of pedals 36.

The transmission 40 may be a flexible cable transmission, as shown inFIG. 5B. Specifically, the flexible cable transmission shown in FIG. 5Bincludes a gear 42 a at the first end 42, a gear 44 a at the second end44, and a flexible cable (not shown) extending through a sheath 43 frombetween the gears 42 a, 44 a. Rotation of one of the gears 42 a, 44 a istransmitted by the flexible cable to the other of the gears 42 a, 44 a.Alternatively, the transmission 40 may be of any suitable type, e.g., achain or belt transmission.

The transmission 40 may transfer rotation of the electric motor 20 torotate the wheel 28, propelling the electric cycle 12. Specifically, asset forth above, the first end 42 of the transmission 40 is connected tothe electric motor 20 and the second end 44 may be connected to the oneof the wheels 28, and, when the electric motor 20 is powered, rotationis transmitted through the transmission 40 from the first end 42 to thesecond end 44, e.g., from gear 42 a to gear 44 a through the cable, torotate the wheel 28. In addition, the transmission 40 may transferrotation of the set of pedals 36 to rotate the wheel 28.

At least one of the modules 30 a, 30 b, 30 c, 30 d may include one orseveral of the wheels 28. As shown in FIG. 4, the wheel 28 may include aplurality of sectors 28 a pivotable from a folded state to an unfoldedstate. The sectors 28 a may be pivoted into the folded state for, e.g.,packaging constraints. When the wheel 28 is needed for use with one ofthe modules 30 a, 30 b, 30 c, 30 d, the wheel 28 may be pivoted to theunfolded state. The wheel 28 may then be attached to one of the modules30 a, 30 b, 30 c, 30 d for use in one of the configurations of theelectric cycle 12.

As mentioned above, the powertrain module 14 may include severalconnecting ports 22 a, 22 b, 22 c, 22 d, 22 e, 22 f. Specifically, asshown in FIGS. 1 and 2, the powertrain module may include a firstconnecting port 22 a, a second connecting port 22 b, a third connectingport 22 c, a fourth connecting port 22 d, a fifth connecting port 22 e,and a sixth connecting port 22 f. It should be appreciated that thepowertrain module 14 may include any number of connecting ports, such asconnecting ports 22 a, 22 b, 22 c, 22 d, 22 e, 22 f.

As shown in FIGS. 1 and 2, the first, second, and third connecting ports22 a, 22 b, 22 c may be disposed on the first side 32, and the fourth,fifth, and sixth connecting ports 22 d, 22 e, 22 f may be disposed onthe second side 34. The connecting ports 22 a, 22 b, 22 c on the firstside 32 may engage modules 30 a, 30 b, 30 c, 30 d configured to face thefront of the electric cycle 12, and the connecting ports 22 d, 22 e, 22f on the second side 34 may engage modules 30 a, 30 b, 30 c, 30 dconfigured to face the rear of the electric cycle 12.

As shown in FIG. 2, the first, second, and third connecting ports 22 a,22 b, 22 c may face in a common direction A, and the fourth and fifthconnecting ports 22 d, 22 e may face in a second common direction B. Thesecond common direction B may be parallel with and substantiallyopposite the common direction A. The first, second, and third connectingports 22 a, 22 b, 22 c may be spaced from each other along an axis AA,and the fourth, fifth, and sixth connecting ports 22 d, 22 e, 22 f maybe spaced from each other along a second axis BB.

Each of the connecting ports 22 a, 22 b, 22 c, 22 d, 22 e, 22 f mayinclude one of the releasable locking features 24. The releasablelocking features 24 engage the frame members 26, locking the framemembers 26 into place during operation of the electric cycle 12. Thereleasable locking features 24 allow the frame members 26 to beselectively released from the powertrain module 14, and the cyclist mayexchange the modules 30 a, 30 b, 30 c, 30 d to form a differentconfiguration of the electric cycle 12. The releasable locking feature24 may be of any suitable construction, e.g., a releasable pin, athreaded attachment, a movable flange, a releasable tab, a tightenedthread, etc., that locks the frame members 26 to the powertrain module14 during operation of the electric cycle 12 while allowing the framemembers 26 to be selectively released and exchanged to alter theconfiguration of the electric cycle 12.

As set forth above, the modules 30 a, 30 b, 30 c, 30 d may beselectively connected to the case 16 to form any of a pluralityconfigurations of the electric cycle 12. Each of the modules 30 a, 30 b,30 c, 30 d includes the frame member 26 configured to releasably engagethe connecting ports 22 a, 22 b, 22 c, 22 d, 22 e, 22 f. As shown inFIGS. 8 and 9, the first module 30 a and the second module 30 b may beconfigured to engage the first side 32 of the case 16. Having multiplemodules 30 a, 30 b, 30 c, 30 d in the kit 10 that may engage the firstside 32 of the case 16 allows for several different configurations ofthe electric cycle 12. Depending on the cyclist's current needs, themodules 30 a, 30 b, 30 c, 30 d may be swapped to form the configurationof the electric cycle 12 more suited to the cyclist.

As shown in FIGS. 6-9, the third module 30 c and the fourth module 30 dmay be configured to engage the second side 34 of the case 16. Inconjunction with the first and second modules 30 a, 30 b engaging thefirst side 32 of the case 16, several different configurations of theelectric cycle 12 may be formed.

The modules 30 a, 30 b, 30 c, 30 d may take any of several forms, asshown in exemplary kits 10 a, 10 b, 10 c, 10 d of FIGS. 6-9. Any of themodules 30 a, 30 b, 30 c, 30 d shown in the exemplary kits 10 of FIGS.6-9 may be combined to create a customized kit 10 for any exemplaryconfiguration of the electric cycle 12.

As shown in FIG. 6, the kit 10 a may include a single wheel steeringmodule 46, a single wheel rear module 48, and a wheelchair attachment50. Here, the first module 30 a is the single wheel steering module 46configured to engage the first side 32 of the case 16. The first module30 a includes several frame members 26. The first module 30 a furtherincludes one of the wheels 28. The second module 30 b is the singlewheel rear module 48. The second module 30 b includes another wheel 28and frame members 26 connecting the wheel 28 to the second side 34 ofthe case 16. The first and second modules 30 a, 30 b may engage thepowertrain module 14 to form an electric bicycle 12 a.

The third module 30 c may be the wheelchair attachment 50. Thewheelchair attachment 50 includes three wheels 28, a seat 50 a, andframe members 26 connecting the seat 50 a and the wheels 28 to thepowertrain module 14. The first and third modules 30 a, 30 c may engagethe powertrain module 14 to form an electric wheelchair 12 b. The thirdmodule 30 c may solely engage the powertrain module 14 to form a compactelectric wheelchair (not shown).

FIG. 7 shows the kit 10 b with a tandem-seat module 52 and amulti-person module 54. Here, the first module 30 a may be the singlewheel steering module 46, the second module 30 b may be the single wheelrear module 48, the third module 30 c may be the tandem-seat module 52,and the fourth module 30 d may be the multi-seat module 54. The firstmodule 30 a is configured to engage the first side 32 of the case 16 andthe second, third, and fourth modules 30 b, 30 c, 30 d are configured toengage the second side 34 of the case 16.

The tandem seat module 52 includes another seat 38 supported by framemembers 26 and another set of pedals 36. To form a tandem bicycle 12 d,the third module 30 c may engage the second module 30 b and thepowertrain module 14. Specifically, the third module 30 c may includeframe members 26 that engage the connecting ports 22 d, 22 e, 22 f onthe second side 34 of the case 16. The second module 30 b may thenengage the third module 30 c, forming the tandem electric bicycle 12 d.

As shown by the tandem bicycle 12 d, the modules 30 a, 30 b, 30 c, 30 dmay engage each other in addition to engaging the powertrain module 14.Specifically, the tandem bicycle 12 d includes the three modules 30 a,30 b, and 30 c, with the third module 30 c engaging both the powertrainmodule 14 and the second module 30 b.

The multi-seat module 54 may include a plurality of seats 38, a wheel28, a plurality of sets of pedals 36, and several frame members 26 toconnect the wheel 28 to the seats 54 a, to support the seats 38, and toengage the powertrain module 14. The fourth module 30 d may engage thepowertrain module 14 and/or the second module 30 b to form a multi-seatcycle 12 c. Specifically, one of the frame members 26 may engage thepowertrain module 14 directly, or may engage the second module 30 b (notshown).

FIG. 8 shows the kit 10 c with an infant seat module 56 and a stationarymodule 58. Here, the first module 30 a may be the single wheel steeringmodule 46, the second module 30 b may be the infant seat module 56, thethird module 30 c may be the single wheel rear module 48, and the fourthmodule 30 d may be the stationary module 58.

The infant seat module 56 may include an infant seat 56 a, a pluralityof wheels 28, and a plurality of frame members 26 to connect the infantseat 56 a and the wheels 28. The stationary module 58 may be anon-circular stand that includes a plurality of frame members 26. Thefirst and second modules 30 a, 30 b are configured to engage the firstside 32 of the case 16, and the third and fourth modules 30 c, 30 d areconfigured to engage the second side 34 of the case 16.

The first and third modules 30 a, 30 c may engage the powertrain module14 to form the electric bicycle 12 a. The second and third modules 30 b,30 c may engage the powertrain module 14 to form an electric infantcarrier 12 e. The first and fourth modules 30 a, 30 d may engage thepowertrain module 14 to form a stationary electric cycle 12 f. Rotationof the set of pedals 36 of the stationary electric cycle 12 f mayrecharge the battery 18 while remaining stationary.

FIG. 9 shows the kit 10 d with a multi-wheel steering module 60 and amulti-wheel rear module 62. The multi-wheel steering module 60 includestwo wheels 28 and a plurality of frame members 26. The multi-wheel rearmodule 62 includes two wheels 28 and a plurality of frame members 26.

Here, as shown in FIG. 9, the first module 30 a may be the single wheelsteering module 46, the second module 30 b may be the multi-wheelsteering module 60, the third module 30 c may be the single wheel rearmodule 48, and the fourth module 30 d may be the multi-wheel rear module62. The first and second modules 30 a, 30 b are configured to engage thefirst side 32 of the case 16 while the third and fourth modules 30 c, 30d are configured to engage the second side 34 of the case 16.

The first and third modules 30 a, 30 c may engage the powertrain module14 to form the electric bicycle 12 a. The first and fourth modules 30 a,30 d may engage the powertrain module 14 to form an electric tricyclewith two rear wheels 12 h; the second and third modules 30 b, 30 c mayengage the powertrain module 14 to form an electric cycle with two frontwheels (not shown). The second and fourth modules 30 b, 30 d may engagethe powertrain module 14 to form an electric quadricycle 12 g.

The kit 10 may be transported in an automobile (not shown). For example,the kit 10, including two or more of the modules 30 a, 30 b, 30 c, 30 dmay be disassembled and transported in a storage compartment of theautomobile, e.g., a hatch, trunk, cargo space, etc. Since the modules 30a, 30 b, 30 c, 30 d may be releasably engaged with the connecting ports22 a, 22 b, 22 c, 22 d, 22 e, 22 f, the modules 30 a, 30 b, 30 c, 30 dmay be disassembled from the case 16 to reduce occupied storage. Thecyclist may drive the automobile to a desired location and, depending onthe desire of the cyclist, the cyclist may assemble any of the modules30 a, 30 b, 30 c, 30 d to the case 16 for a desired use at thatlocation.

Each of the modules 30 a, 30 b, 30 c, 30 d may be disassembled with anappropriate tool, e.g., a hex key, a screwdriver, a set of tweezers,etc., to form different modules. The modules 30 a, 30 b, 30 c, 30 d mayalso be disassembled to conserve space in the automobile.

The modules including modules 30 a, 30 b, 30 c, 30 d, or any othersuitable module, may manufactured in any suitable manner, e.g.,3-dimensional printing. For example, the modules or parts of modules,including frame members 26, may be formed by 3-dimensional printing toform modules suitable to various tasks. These 3-dimensionally printedmodules may include frame member 26 configured to engage the releasablelocking feature 24 and may be added to the kit 10 with the modules 30 a,30 b, 30 c, 30 d.

The disclosure has been described in an illustrative manner, and it isto be understood that the terminology which has been used is intended tobe in the nature of words of description rather than of limitation. Manymodifications and variations of the present disclosure are possible inlight of the above teachings, and the disclosure may be practicedotherwise than as specifically described.

1. A kit for an electric cycle comprising: a powertrain module includinga case, a battery disposed in the case, an electric motor incommunication with the battery and disposed in the case, and aconnecting port on the case; a first module including a frame memberconfigured to releasably engage the connecting port and a wheelrotatably connected to the frame member; a second module including aframe member configured to releasably engage the connecting port; and areleasable locking feature on the connecting port.
 2. The kit of claim1, wherein the powertrain module includes a second connecting portdisposed on the case.
 3. The kit of claim 2, wherein the first andsecond connecting ports face in a common direction and are spaced fromeach other along a vertical axis.
 4. The kit of claim 2, wherein thepowertrain module includes a third connecting port facing in the commondirection, with the first, second, and third connecting ports spacedfrom each other along an axis.
 5. The kit of claim 1, further comprisinga transmission having a first end connected to the electric motor and asecond end configured to be connected to the wheel of the first module.6. The kit of claim 5, wherein the transmission is a flexible cabletransmission.
 7. The kit of claim 1, wherein the second module furtherincludes a wheel rotatably connected to the frame member.
 8. The kit ofclaim 1, further comprising an opposite connecting port positioned onthe case opposite the connecting port, a third module including a framemember configured to releasably engage the opposite connecting port anda wheel rotatably connected to the frame member of the third module, anda second releasable locking feature on the opposite connecting port. 9.The kit of claim 8, wherein the second module is configured toreleasably engage at least one of the first module and the third module.10. The kit of claim 9, wherein the second module further includes aseat supported by the frame member and a set of pedals rotatablyconnected to the frame member.
 11. The kit of claim 8, furthercomprising a fourth module including a frame member configured toreleasably engage at least one of the connecting port, the secondconnecting port, the first module, the second module, and the thirdmodule.
 12. The kit of claim 1, wherein the first module includes aninfant seat disposed above the wheel.
 13. The kit of claim 1, whereinthe first module includes a seat supported by the frame member.
 14. Thekit of claim 1, wherein the powertrain module includes a seat supportedon the case.
 15. The kit of claim 1, wherein the wheel comprises aplurality of sectors pivotable from a folded state to an unfolded state.16. The kit of claim 1, wherein the second module is configured toreleasably engage the first module.
 17. A powertrain module for anelectric cycle comprising: a case having a first side and a second sideopposite the first side; a battery disposed in the case; an electricmotor connected to the battery and disposed in the case; a firstconnecting port on the first side and another connecting port on thesecond side; a releasable locking feature on each of the connectingports; and a set of pedals disposed through the case.
 18. The powertrainmodule of claim 17, further comprising a seat supported on the case. 19.The powertrain module of claim 17, wherein the first side includes athird connecting port.
 20. The powertrain module of claim 19, whereinthe first and third connecting ports are spaced from each other along avertical axis.